list-ietf-antispam(_at_)faerber(_dot_)muc(_dot_)de
(=?ISO-8859-1?Q?Claus_F=E4rber?=) wrote:
One could use special addresses as the envelope recipient which become
invalid after a month.
Mail to these addresses is only accepted if it has a return path of <>
and mail to other addresses only if it has a return path that is not <>.
The addresses would have to contain a timestamp and a digital signature,
which is checked by the MTA that receives mail for the user who uses
such a scheme.
There's already an equivalent solution in RFC 3461.
Tony.
--
f.a.n.finch <dot(_at_)dotat(_dot_)at> http://dotat.at/
SELSEY BILL TO LYME REGIS: VARIABLE MAINLY NORTH OR NORTHEAST 3 OR 4, LOCALLY
2. MOST OF THE MIST THINNING. MODERATE OR POOR WITH FOG PATCHES BECOMING
MODERATE LOCALLY GOOD. SLIGHT.
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